How is a baby's gender (male/female) determined by chromosomes? Make sure you mention X and Y chromosomes

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Match the following items 1. rr 2. rr 3. identical alleles 4. unlike alleles 5. rr ()homozygous, recessive ()homozygous definition ()heterozygous, dominant cell ()heterozygous definition () homozygous, dominant cell

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.